The secret files called the Zacharis Dossier may cause a war between the East and the West. In order to obtain a painting that is supposed to be the hiding spot for these files, Loid and Fiona enter an underground tennis tournament run by the owner of the painting, Campbell. If they win, the art piece they're after will be presented. Loid and Fiona enter as a married couple and play various skilled players including pro players!
We've continued the pursuit of tennis 
even after our retirement.
.واصلنا ممارسة كرة المضرب حتّى بعد تقاعدنا
Wir folgen dem Weg des Tennis
auch nach unserem Rücktritt noch.
Nosotros seguimos perfeccionando
nuestro tenis incluso tras retirarnos.
Nosotros hemos seguido perfeccionando
nuestro tenis incluso tras retirarnos.
Même après notre carrière,
on a continué de parfaire notre jeu.
Abbiamo continuato a perfezionarci 
nell'arte del tennis anche dopo il ritiro.
Continuamos no caminho do tênis,
mesmo depois de parar de competir.
Мы даже после окончания карьеры
продолжили оттачивать мастерство!